Electromagnetic appliance for railways



June 23, 1925. 1,542,902

R. s. MERRIETT ELECTROMAGNETIC APPLIANCE FOR RAILWAYS Filed Aug. 11, 192.3

Patented June 23, 1 925.

UNITED STATES ltAYflVIOLTD S. MERBIETT, OF SYRACUSE, YOR -K.

ELECTRDMAGN ETIC APPLIANCE FOR RAILWAYS.

App1ication filed August 11, ,1923. Serial No. 656,547,

To all whom it may concern; 7

Be it known that I, RAY o D S. MERRIE r'r, a citizen of the United States of America,

F or Syracuse, in the county of Onondaga, in the State of New York, have invented new a d useful Improvements in Electromagnetic Appliances for Railways, ofwhich the following, taken in connection with the ace companyingdrawings, is afull, clear, exact description.

This invention relates to an electric appliance for railways adapted vtobe used in connection with automatic brake operating and systems of the class set-forth in mypending application filed August ll, 1923, Serial Number 656,848, and in any other relation where primary electromagnet or coil is to be used as a part of the track equipment to cooperate with a secondary coil carried by the train receiving current by induction from the primary coil in the operation of one or more translating devices on the en gine or train. l

The main object is to enable these primary electromagnets or coils to be placed at suitable intervals along and beneath either or both rails in such manner as not to interfere with the magnetic circuit or free induction of the current from the electro magnet to the secondary coil on the train.

Another object is to provide each coil with a case of insulating or non-magnetic material to protect it from the elements and contact with external objects, and at the same time to enable the case with the primary electromagnet therein to be easily and quickly installed as a unit beneath the rail by securement of the case to an adjacent tie or other suitable support.

Other objects and uses relating to specific parts of the invention will be brought out in the following description.

In the drawings:

Figure l is a cross sectional view of a rail and underlying case containing one of the primary electromagnets together with insulating blocks of wood or equivalent material applied to opposite sides of the web and covering the base flanges of the rail.

Figure 2 is a sectional view taken in the plane of line 22, Figure 1, showing the manner of securing'the' case or housing for the electromagnet to the tie and also showing the relative positions of the insulating blocks and electromagnet.

In order that my invention may be understood, I have shown one of the rails as A'--- of a railway'track adapted to rest as usual upon ties between which are placed the electromz-tgnets as 1, preferably of the horse shoe type except that its poles '-2 and -2 are extended laterally or in op posite directions from-the opposite arms of its core and thatthe winding as 1-, is

around the intermediate portion of the core poles. y

The electromagnet is preferably inclosed in a suitable case or housing -3- of insulatingor non-magnetic materialwhich is secured by screws 7-4:: or equivalent fastening means to the upright face of one of the ties a' directly beneath the base flange of the rail A, thereby supporting the intermediate portion of the electromagnet -1 in a similar position directly below the rail.

The core is supported within the casing upon suitable pins 5 while the ends of the winding or coil are brought into a cable energy and translating devices not necessary 7 to herein illustrate or describe except that the electromagnet is adapted to be energized by the passing of the train along the track and may be the caution magnet, danger or reset magnet described in my pending application previously referred to for the purpose of energizing by induction, the secondary circuits in the train for automatically effecting the operation of the engineers brake valve or other device for applying the brakes.

The ends or poles -2 and 2 of the core of the electromagnet and adjacent ends of the case -3 extend some distance beyond the opposite edges of the base flange of the rail A to prevent short circuiting "of the magnetic circuit and also to permit induction from the energized electromagnet to the secondary coil andsecondary circuit of the train as the secondary coil is brought into the field of the electromagnet by the movement of the train along the track.

As a further means for preventing short circuiting of the magnetic circuit of the electromagnet by the rail A, suitable insulating blocks 8 are secured by one or more bolts 9 to opposite faces of the web of the rail between the head and base flangesthereof directly over the central portion of the electromagnet and across the outer longitudinal edges of the base flange of said rail but within the length 01": the poles 2 and -2t so that when a coil of the secondary circuit carried by the train is brought within the field of the magnet by the movement of the train along the track, the current will readily pass from the poles -2 and 2 to the secondary coil which, of course, wouldbe arranged with its core or axis substantially parallel with the axis oi the core 01 the electromagnet -1 or in the most suitableposition for receiving flux from the pole pieces of the electromagnet.

I-olaim:

1. Ari-electromagnetic appliance for railways comprisingin' combination with one of the rails, an I electromagnet directly below and in proximity to the base of the rail, and a housing of non-magnetic matter inclosing said magnet.

An electromagnetic appliance for railways comprising in combination with one of netic material inclosing said electromagnet- 3. An electromagnetic device, as in claim 1, in which blocks of insulating material are applied to opposite sides of the rail directly over the electromagnet.

4:. An electromagnetic device, as in. claim 1, in which the electromagnet is of the horse shoe type audits poles extended horizontally in a plane above its intermediate portion, and the winding-of the electromagnet is confined to the intermediate portion some 'distance'from the horizontally extending poles. In witness whereof I have hereunto set my hand this 2nd day of August 1923.

RAYMOND S. l/lERRIE'lT.

l/Vitnesses: i

'I-InE. CHAsn,

RITA CAMPOLTETO. 

